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EP 2 678 633 A1

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(43) Date of publication: 01.01.2014 Bulletin 2014/01 (21) Application number: 12706936.7 (22) Date of filing: 20.02.2012

(51) International Patent Classification (IPC):  F42B 3/12(2006.01) F42D 1/05(2006.01) F42B 3/113(2006.01) F42B 3/18(2006.01) F42C 11/00(2006.01) (86) International application number: PCT/IB2012/050757 (87) International publication number: WO 2012/114251 (30.08.2012 Gazette 2012/35)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 21.02.2011 ZA 201101370 09.12.2011 WO PCT/IB2011/055573 09.12.2011 WO PCT/IB2011/055576 (71) Applicant: AEL MINING SERVICES LIMITED Woodmead 2191 Sandton (ZA)

(72) Inventors: MULLER, Elmar 0157 Centurion (ZA) HALLIDAY, Pieter, Stephanus, Jacobus 2153 Randburg (ZA) MORGAN, Clifford, Gordon 1619 Kempton Park (ZA) DASTOOR, Paul Callaghan, New South Wales 2308 (AU) BELCHER, Warwick Callaghan, New South Wales 2308 (AU) ZHOU, Xiaojing Callaghan, New South Wales 2308 (AU) BRYANT, Glenn Callaghan, New South Wales 2308 (AU) (74) Representative: HOFFMANN EITLE  Patent- und Rechtsanwälte Arabellastrasse 4 81925 München 81925 München (DE)